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Strategic Design of Heavy Metals Removal Agents through Zeta Potential Measurements

In: Heavy Metals

Author

Listed:
  • Eduardo A. Lopez-Maldonado
  • Mercedes T. Oropeza-Guzman

Abstract

Industrial wastewater generally contains significant amounts of toxic heavy metals that cause a problem of contamination to the environment. In this chapter, the use of polyelectrolytic waste as new coagulant-flocculating-chelating agents in the separation of Cu, Ni, Zn, Pb, Cd, Cr by a coagulation-flocculation process is discussed. The isoelectric point (? = 0) of the residual water was reached with a dose of 2.5 mg chitosan and observed a clarification kinetics = 187.49% T/h, sediment kinetics = 93.96 mm/h and an efficiency of 85% in the removal of heavy metals. With the SEM-EDS analysis and the determination of heavy metals in the treated water, it is shown that the functional groups that chitosan has in its structure have the following order of affinity for the removal of heavy metals from the wastewater model: Cr = 27.64% > Ni = 21.96% > Pb = 21.28% > Zn = 14.68% > Cu = 10.96% > Cd = 3.35% > Ca = 0.12%.

Suggested Citation

  • Eduardo A. Lopez-Maldonado & Mercedes T. Oropeza-Guzman, 2018. "Strategic Design of Heavy Metals Removal Agents through Zeta Potential Measurements," Chapters, in: Hosam M. Saleh & Refaat Fekry Eid Sayed (ed.), Heavy Metals, IntechOpen.
    • Handle: RePEc:ito:pchaps:133469
    DOI: 10.5772/intechopen.74053
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    More about this item

    Keywords

    heavy metals; zeta potential; wastewater treatment; biopolyelectrolytes; coagulation-flocculation;
    All these keywords.

    JEL classification:

    • Q55 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environmental Economics: Technological Innovation

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